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+
+#------------------------------------------------------------------------------
+# $File: adventure,v 1.18 2019/04/19 00:42:27 christos Exp $
+# adventure: file(1) magic for Adventure game files
+#
+# from Allen Garvin <earendil@faeryland.tamu-commerce.edu>
+# Edited by Dave Chapeskie <dchapes@ddm.on.ca> Jun 28, 1998
+# Edited by Chris Chittleborough <cchittleborough@yahoo.com.au>, March 2002
+#
+# ALAN
+# I assume there are other, lower versions, but these are the only ones I
+# saw in the archive.
+0 beshort 0x0206 ALAN game data
+>2 byte <10 version 2.6%d
+
+
+# Infocom (see z-machine)
+#------------------------------------------------------------------------------
+# Z-machine: file(1) magic for Z-machine binaries.
+# Sanity checks by David Griffith <dave@661.org>
+# Updated by Adam Buchbinder <adam.buchbinder@gmail.com>
+#
+#http://www.gnelson.demon.co.uk/zspec/sect11.html
+#https://www.jczorkmid.net/~jpenney/ZSpec11-latest.txt
+#https://en.wikipedia.org/wiki/Z-machine
+# The first byte is the Z-machine revision; it is always between 1 and 8. We
+# had false matches (for instance, inbig5.ocp from the Omega TeX extension as
+# well as an occasional MP3 file), so we sanity-check the version number.
+#
+# It might be possible to sanity-check the release number as well, as it seems
+# (at least in classic Infocom games) to always be a relatively small number,
+# always under 150 or so, but as this isn't rigorous, we'll wait on that until
+# it becomes clear that it's needed.
+#
+0 ubyte >0
+>0 ubyte <9
+>>16 belong&0xfe00f0f0 0x3030
+>>>0 ubyte < 10
+>>>>2 ubeshort x
+>>>>>18 regex [0-9][0-9][0-9][0-9][0-9][0-9]
+>>>>>>0 ubyte < 10 Infocom (Z-machine %d
+>>>>>>>2 ubeshort x \b, Release %d
+>>>>>>>>18 string >\0 \b, Serial %.6s
+>>>>>>>>18 string x \b)
+!:strength + 40
+!:mime application/x-zmachine
+
+#------------------------------------------------------------------------------
+# Glulx: file(1) magic for Glulx binaries.
+#
+# David Griffith <dave@661.org>
+# I haven't checked for false matches yet.
+#
+0 string Glul Glulx game data
+>4 beshort x (Version %d
+>>6 byte x \b.%d
+>>8 byte x \b.%d)
+>36 string Info Compiled by Inform
+!:mime application/x-glulx
+
+
+# For Quetzal and blorb magic see iff
+
+
+# TADS (Text Adventure Development System) version 2
+# All files are machine-independent (games compile to byte-code) and are tagged
+# with a version string of the form "V2.<digit>.<digit>\0".
+# Game files start with "TADS2 bin\n\r\032\0" then the compiler version.
+0 string TADS2\ bin TADS
+>9 belong !0x0A0D1A00 game data, CORRUPTED
+>9 belong 0x0A0D1A00
+>>13 string >\0 %s game data
+!:mime application/x-tads
+# Resource files start with "TADS2 rsc\n\r\032\0" then the compiler version.
+0 string TADS2\ rsc TADS
+>9 belong !0x0A0D1A00 resource data, CORRUPTED
+>9 belong 0x0A0D1A00
+>>13 string >\0 %s resource data
+!:mime application/x-tads
+# Some saved game files start with "TADS2 save/g\n\r\032\0", a little-endian
+# 2-byte length N, the N-char name of the game file *without* a NUL (darn!),
+# "TADS2 save\n\r\032\0" and the interpreter version.
+0 string TADS2\ save/g TADS
+>12 belong !0x0A0D1A00 saved game data, CORRUPTED
+>12 belong 0x0A0D1A00
+>>(16.s+32) string >\0 %s saved game data
+!:mime application/x-tads
+# Other saved game files start with "TADS2 save\n\r\032\0" and the interpreter
+# version.
+0 string TADS2\ save TADS
+>10 belong !0x0A0D1A00 saved game data, CORRUPTED
+>10 belong 0x0A0D1A00
+>>14 string >\0 %s saved game data
+!:mime application/x-tads
+
+# TADS (Text Adventure Development System) version 3
+# Game files start with "T3-image\015\012\032"
+0 string T3-image\015\012\032
+>11 leshort x TADS 3 game data (format version %d)
+# Saved game files start with "T3-state-v####\015\012\032"
+# where #### is a format version number
+0 string T3-state-v
+>14 string \015\012\032 TADS 3 saved game data (format version
+>>10 byte x %c
+>>11 byte x \b%c
+>>12 byte x \b%c
+>>13 byte x \b%c)
+!:mime application/x-t3vm-image
+
+# edited by David Griffith <dave@661.org>
+# Danny Milosavljevic <danny.milo@gmx.net>
+# These are ADRIFT (adventure game standard) game files, extension .taf
+# Checked from source at (http://www.adrift.co/) and various taf files
+# found at the Interactive Fiction Archive (https://ifarchive.org/)
+0 belong 0x3C423FC9
+>4 belong 0x6A87C2CF Adrift game file version
+>>8 belong 0x94453661 3.80
+>>8 belong 0x94453761 3.90
+>>8 belong 0x93453E61 4.0
+>>8 belong 0x92453E61 5.0
+>>8 default x unknown
+!:mime application/x-adrift